Problem for me was that i knew the facts that they asked for the systems exam.
How many fire extinuishers, halon extinguishers and crash axes on board were covered in systems not ops.
Also the question with you have 60 passengers on board at 80nm from shore how many life jackets should be on board was a bad question as what about the crew. If it was 60 including the crew then you need 60 life jackets and 3 life rafts but the answers were 60, 0, none if there is life rafts or 66? Thats a nasty question i went for 66 due to the fact that it wasn't 0 if there is 60 passengers then you need crew life jackets and i'm sure that you still need life jackets on a raft. Also what happens when landong with heavy rain, a choice of 5 and the answers didn't contain increase speed, make a firm landing and systematically use dumping devices, however those 3 choices were part of the 5.
Another question had 2 right answers so i thought it was a trick and went for a totally different answer which is probably wrong